The search for a mother and her live-in boyfriend wanted after a 3-year-old boy was brought to a New Hampshire hospital with life-threatening injuries, including bruises and burns all over his body, has been expanded to the Boston area, according to New Hampshire police.

Plaistow, N.H., police received a call from Exeter Hospital last Wednesday to report the extensive injuries to the boy, who police said has lost his sight because of the head injuries he suffered.

"There were significant second-degree burns on the child, on the arms and the wrist injury. You could see that visibly," said Plaistow Police Lt. William Baldwin. "There was a significant amount of bruising on the body, all over the body -- some new, some old."

On Friday, police got arrest warrants for the child's mother, Jessica Linscott, and her boyfriend, Roland Dow, and a search warrant for their home at 197 Main St., Plaistow police said.

"A lot of us are parents here. We cannot fathom a mother, who's the closest bond to a child, would allow this child to go through what he's gone through," said Baldwin.

Linscott faces six charges of child neglect and endangering a child. Dow faces five counts of the same charges. The couple also faces first-degree assault charges in the case, police said.

"It's time for someone to answer for those charges, and it's time for someone to stand up for this child. He's only three years old," said Baldwin.

Police are actively searching for Linscott and Dow.

"They told me that the baby had seizures and they brought him to the hospital," said Dow's grandmother, who declined to give her name.

"If you see these folks, if you're helping them, let us know, tell them to turn themselves in," Baldwin said.